R bugzilla review

Introduction

What is the bugRzilla Package?

BugRzilla is an R package that helps the user to interact with the Bugzilla through an API.

To learn more, see bugRzilla.

About the bugRzilla Google Summer of COde Project:-

bugRzilla is a package to interact with a bugzilla API and specially with R bugzilla. The goal of the project is to help users to submit issues to R Bugzilla.

About the This Project:-

Explore the issues and bugs on the R Bugzilla to make the submission from bugRzilla better. It might help to identify useful patterns for R core or report the status of the R Bugzilla.

To learn more, see bugzilla_viz.

Setup Database on your local system

Download SQL and MySQL Workbench

To install SQL on Ubuntu one can refer a blog post by digitalocean. To install MySQL workbench on Ubuntu one can refer a blog post by linuxhint

Download R_bugzilla data

1. The R_bugzilla data can be downloaded from link.
2. Since the downloaded data is a zip file so make sure you unzip the file by directly using extract here option to the folder you desire before dumping the file which will have an extension .sql (eg: R-bugs.sql).

Dump downloaded R_bugzilla to MySQL workbench.

Before one import the R_bugzilla SQL file one needs to create the (empty) database from MySQL if it doesn’t exist already and the exported SQL don’t contain CREATE DATABASE (exported with –no-create-db or -n option), before you can import it.

After considering this open your Terminal and run the command: mysqldump -u my_username -p database_name > output_file_path or you can use mysql using the command: source <Path>/R-bugs.sql;

The options in use are:

1. The -u flag indicates that the MySQL username will follow.
2. The -p flag indicates we should be prompted for the password associated with the above username. database_name is of course the exact name of the database to export. eg. bugRzilla is the empty database you created.
3. The > symbol is a Unix directive for STDOUT, which allows Unix commands to output the text results of the issued command to another location. In this case, that output location is a file path, specified by output_file_path.

For Example,

1. At the command prompt, run the following command to launch the mysql shell and enter it as the root user: mysql -u root -p
2. When you’re prompted for a password, enter the one that you set at installation time, or if you haven’t set one, press Enter to submit no password. The following mysql shell prompt should appear: mysql>
3. In MySQL, I used this to dump the data in the empty database:
   • Create an empty database: create database bugRzilla;
   • To check wheather the database is created or not use: show databases;
   • Once an empty database is created then to dump the SQL data in the database use: source /home/data/Documents/GSOC/R-bugs.sql;

   • To check your database is dumped correctly use: show tables;

     mysql> show tables;
     +---------------------+
     | Tables_in_bugRzilla |
     +---------------------+
     | attachments         |
     | bugs                |
     | bugs_activity       |
     | bugs_fulltext       |
     | bugs_mod            |
     | components          |
     | longdescs           |
     +---------------------+
     7 rows in set (0.00 sec)

bugRzilla Analysis

For the connection to the database, I’m using the dplyr package, it supports to the widely-used open source databases like MySQL.

The libraries used for the analysis:

# loading packages
library(dplyr)

## 
## Attaching package: 'dplyr'

## The following objects are masked from 'package:stats':
## 
##     filter, lag

## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union

library(dbplyr)

## 
## Attaching package: 'dbplyr'

## The following objects are masked from 'package:dplyr':
## 
##     ident, sql

library(RMySQL)

## Loading required package: DBI

library(DBI)
library(DT)
library(tidyverse)

## ── Attaching packages ─────────────────────────────────────── tidyverse 1.3.1 ──

## ✓ ggplot2 3.3.5     ✓ purrr   0.3.4
## ✓ tibble  3.1.2     ✓ stringr 1.4.0
## ✓ tidyr   1.1.3     ✓ forcats 0.5.1
## ✓ readr   1.4.0

## ── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
## x dplyr::filter() masks stats::filter()
## x dbplyr::ident() masks dplyr::ident()
## x dplyr::lag()    masks stats::lag()
## x dbplyr::sql()   masks dplyr::sql()

library(skimr)
library(ggplot2)
library(plotly)

## 
## Attaching package: 'plotly'

## The following object is masked from 'package:ggplot2':
## 
##     last_plot

## The following object is masked from 'package:stats':
## 
##     filter

## The following object is masked from 'package:graphics':
## 
##     layout

Connect bugRzilla SQL Database with R

# Connecting R with MySQL
con <- dbConnect(
    MySQL(),
    dbname='bugRzilla', # change the database name to your database name
    username='root', # change the username to your username
    password='1204', # update your password
    host='localhost',
    port=3306)

#  Accessing Tables names from the Database
DBI::dbListTables(con)

## [1] "attachments"   "bugs"          "bugs_activity" "bugs_fulltext"
## [5] "bugs_mod"      "components"    "longdescs"

Data Exploartion of Bugs Table from the Database

bugs_df <- tbl(con, "bugs")

## Warning in .local(conn, statement, ...): Decimal MySQL column 24 imported as
## numeric

## Warning in .local(conn, statement, ...): Decimal MySQL column 25 imported as
## numeric

#for quick view of the datatypes and the structure of data
skim(bugs_df)

## Warning in .local(conn, statement, ...): Decimal MySQL column 24 imported as
## numeric

## Warning in .local(conn, statement, ...): Decimal MySQL column 25 imported as
## numeric

Data summary

Name	bugs_df
Number of rows	7042
Number of columns	27
_______________________
Column type frequency:
character	15
numeric	12
________________________
Group variables	None

Variable type: character

skim_variable	n_missing	complete_rate	min	max	empty	n_unique	whitespace
bug_file_loc	0	1	0	136	6990	51	0
bug_severity	0	1	5	11	0	7	0
bug_status	0	1	3	11	0	8	0
creation_ts	0	1	19	19	0	7028	0
delta_ts	0	1	19	19	0	6308	0
short_desc	0	1	1	255	0	6923	0
op_sys	0	1	3	15	0	22	0
priority	0	1	2	2	0	5	0
rep_platform	0	1	3	25	0	7	0
version	0	1	3	15	0	43	0
resolution	0	1	0	19	564	12	0
target_milestone	0	1	3	3	0	1	0
status_whiteboard	0	1	0	0	7042	1	0
lastdiffed	0	1	19	19	0	6324	0
deadline	7008	0	19	19	0	30	0

Variable type: numeric

skim_variable	n_missing	complete_rate	mean	sd	p0	p25	p50	p75	p100	hist
bug_id	0	1	10817.89	6189.36	1	5686.75	14101.5	16048.75	18097	▃▁▂▂▇
assigned_to	0	1	17.48	120.26	1	2.00	5.0	16.00	2787	▇▁▁▁▁
product_id	0	1	2.00	0.00	2	2.00	2.0	2.00	2	▁▁▇▁▁
reporter	0	1	685.69	1003.34	1	2.00	2.0	1056.00	3432	▇▂▁▁▁
component_id	0	1	9.84	5.20	2	6.00	9.0	15.00	19	▇▇▆▃▆
qa_contact	7042	0	NaN	NA	NA	NA	NA	NA	NA
votes	0	1	0.00	0.00	0	0.00	0.0	0.00	0	▁▁▇▁▁
everconfirmed	0	1	0.83	0.38	0	1.00	1.0	1.00	1	▂▁▁▁▇
reporter_accessible	0	1	1.00	0.00	1	1.00	1.0	1.00	1	▁▁▇▁▁
cclist_accessible	0	1	1.00	0.00	1	1.00	1.0	1.00	1	▁▁▇▁▁
estimated_time	0	1	0.10	6.60	0	0.00	0.0	0.00	552	▇▁▁▁▁
remaining_time	0	1	0.00	0.00	0	0.00	0.0	0.00	0	▁▁▇▁▁

From the above table we can conclude that the few of the columns are having wrong datatype like:

1. creation_ts
2. delta_ts
3. lastdiffed
4. estimated_time
5. remaining_time
6. deadline

Note:The Column estimated_time and remaining_time only contains the integer value. So, It can’t be transformed to Date format datatype. Also there are columns which are empty so they are of no use of the analysis like:

1. target_milestone
2. qa_contact
3. status_whiteboard

# Converting `bugs_df` to `dataframe`
bugs_df <- as.data.frame(bugs_df)

## Warning in .local(conn, statement, ...): Decimal MySQL column 24 imported as
## numeric

## Warning in .local(conn, statement, ...): Decimal MySQL column 25 imported as
## numeric

Cleaning the data

First steps, check the data and prepare it for what we want:

#converting the required fields in the correct datatype format
bugs_df <- bugs_df %>%
    mutate_at(vars("creation_ts", "delta_ts", "lastdiffed", "deadline"), as.Date)
# Taking the columns which are useful
bugs_df <- bugs_df %>%
    select("bug_id", "bug_severity", "bug_status", "creation_ts", "delta_ts", "op_sys", "priority", "resolution", "component_id", "version", "lastdiffed", "deadline")
#for quick view of the datatypes and the structure of data
skim(bugs_df)

Data summary

Name	bugs_df
Number of rows	7042
Number of columns	12
_______________________
Column type frequency:
character	6
Date	4
numeric	2
________________________
Group variables	None

Variable type: character

skim_variable	n_missing	complete_rate	min	max	empty	n_unique	whitespace
bug_severity	0	1	5	11	0	7	0
bug_status	0	1	3	11	0	8	0
op_sys	0	1	3	15	0	22	0
priority	0	1	2	2	0	5	0
resolution	0	1	0	19	564	12	0
version	0	1	3	15	0	43	0

Variable type: Date

skim_variable	n_missing	complete_rate	min	max	median	n_unique
creation_ts	14	1	1998-08-07	2021-05-07	2009-12-08	4274
delta_ts	30	1	1998-08-09	2021-05-08	2012-07-20	3562
lastdiffed	14	1	1998-08-07	2021-05-08	2012-07-10	3565
deadline	7008	0	2010-04-23	2015-04-23	2013-11-09	30

Variable type: numeric

skim_variable	n_missing	complete_rate	mean	sd	p0	p25	p50	p75	p100	hist
bug_id	0	1	10817.89	6189.36	1	5686.75	14101.5	16048.75	18097	▃▁▂▂▇
component_id	0	1	9.84	5.20	2	6.00	9.0	15.00	19	▇▇▆▃▆

#showing the `datatable`
datatable(head(bugs_df, 5), options = list(scrollX = TRUE))

About the Bugs Data used for Analysis

I’ve taken the 12 columns under consideration to Analyse the Data. The brief description about the columns as follows:

1. bug_id: Unique numeric identifier for bug.
2. bug_severity: How severe the bug is, e.g. enhancement, critical, etc.
3. bug_status: Current status, e.g. NEW, RESOLVED, etc.
4. creation_ts: When bug was filed.
5. delta_ts: The timestamp of the last update on the bug. This includes updates to some related tables (e.g. “longdescs”).
6. op_sys: Operating system bug was seen on, e.g. Windows Vista, Linux, etc.
7. priority: The priority of the bug (P1 = most urgent, P5 = least urgent).
8. resolution: The resolution, if the bug is in a closed state, e.g. FIXED, DUPLICATE, etc.
9. component_id: Numeric ids of the components.
10. version: Version of software in which bug is seen.
11. lastdiffed: The time at which information about this bug changing was last emailed to the cc list.
12. deadline: Date by which bug must be fixed.

Visualizations

bug_created <- bugs_df %>%
    ggplot(aes(x = creation_ts, y = bug_id)) +
    geom_line(color = "darkorchid4") +
    labs(title = "Bug Creation",
           subtitle = "The data frame is sent to the plot using pipes",
           y = "Bug ID",
           x = "Date") +
    theme_bw(base_size = 15)
ggplotly(bug_created)

From the above the visualizations, The Time-series graph shows that which bug_id was filed in which month and year and from the bar graph we can conclude that in which year the most bugs are filed and when one will zoom the graphs, one can see on which date which bug was filed. The most of the Bugs are filled in the month of January and July.

last_modified <- bugs_df %>%
    ggplot(aes(x = lastdiffed, y = bug_id)) +
    geom_line() +
    labs(title = "Bug Last Modified",
         y = "Bug ID",
         x = "Date") +
    theme_bw(base_size = 15)
ggplotly(last_modified)

# Plotting the Time Series graph with the bug_id and delta_ts
last_modified_graph <- bugs_df %>%
    ggplot(aes(x = delta_ts, y = bug_id)) +
    geom_point() +
    labs(title = "Bug changing was last emailed to the cc list",
           y = "Bug ID",
           x = "Date") + theme_bw(base_size = 15)
ggplotly(last_modified_graph)

From the above the visualizations, The Time-series graph shows that which bug_id was last update. Most of the bugs are last updated in the month of January,March, April, and July.

Resolution_graph <- ggplot(bugs_df,aes(x = resolution)) +
    geom_bar() +
    scale_x_discrete(guide = guide_axis(n.dodge = 5)) +
    labs(
        title = "Bug Resolution Bar graph with Bug Count",
        x = "Resolution",
        y = "Bug Count"
    ) + coord_flip()
ggplotly(Resolution_graph)

From the above the visualizations, The Resolution bar-graph shows that which bug_id belongs to which category of resolution, if the bug is in a closed state, e.g. FIXED, DUPLICATE, etc. As we can conclude, that most bugs belongs to the fixed category of the resolution.

Status_graph <- ggplot(bugs_df,aes(x = bug_status)) +
    geom_bar() +
    scale_x_discrete(guide = guide_axis(n.dodge = 5)) +
    labs(
        title = "Bug Status Bar graph with Bug Count",
        x = "Bug Status",
        y = "Bug Count"
    )
ggplotly(Status_graph)

From the above the visualizations, The bug_status bar-graph shows that which bug_id belongs to which category of bug_status, e.g. NEW, RESOLVED, etc. As we can conclude, that most bugs belongs to the closed category of the bug_status.

Severity_graph <- ggplot(bugs_df,aes(x = bug_severity)) +
    geom_bar() +
    scale_x_discrete(guide = guide_axis(n.dodge = 5)) +
    labs(
        title = "Bug Severity Bar graph with Bug Count",
        x = "Bug Severity",
        y = "Bug Count"
    )
ggplotly(Severity_graph)

From the above the visualizations, The bug_severity bar-graph shows that which bug_id belongs to which category of bug_severity. Most of the bug which are filed are normal, some of the bugs which are filled under enhancements are retested for some features, minor and major and a very few bugs are filed under the blocker category.

Data Exploartion of bugs and Attachments Table from the Database

bugs_attach_df <- tbl(con, "attachments")
# Converting `bugs_attach_df` to `dataframe`
bugs_attach_df <- as.data.frame(bugs_attach_df)
#for quick view of the datatypes and the structure of data
skim(bugs_attach_df)

Data summary

Name	bugs_attach_df
Number of rows	1823
Number of columns	11
_______________________
Column type frequency:
character	5
numeric	6
________________________
Group variables	None

Variable type: character

skim_variable	n_missing	complete_rate	min	max	empty	n_unique	whitespace
creation_ts	0	1	19	19	0	1771	0
modification_time	0	1	19	19	0	1630	0
description	0	1	0	174	187	1485	0
mimetype	0	1	8	71	0	69	0
filename	0	1	3	70	0	1522	0

Variable type: numeric

skim_variable	n_missing	complete_rate	mean	sd	p0	p25	p50	p75	p100	hist
attach_id	0	1	1876.50	572.77	1	1362.5	1895	2380.5	2838	▁▃▇▇▇
bug_id	0	1	15351.15	3661.05	1	15004.0	16413	17369.0	18097	▁▁▁▁▇
ispatch	0	1	0.43	0.49	0	0.0	0	1.0	1	▇▁▁▁▆
submitter_id	0	1	1313.33	1104.28	1	317.0	979	2143.0	3432	▇▆▂▃▃
isobsolete	0	1	0.12	0.32	0	0.0	0	0.0	1	▇▁▁▁▁
isprivate	0	1	0.00	0.00	0	0.0	0	0.0	0	▁▁▇▁▁

Cleaning attachments Data

bugs_attach_df <- bugs_attach_df %>%
    mutate_at(vars("creation_ts", "modification_time"), as.Date) %>%
    mutate_at(vars("isobsolete", "isprivate", "ispatch"), as.logical)

Joining the bugs and attachments tables

#joining the `attachments` and `bugs` table
baa <- merge(bugs_attach_df, bugs_df, by = intersect(names(bugs_attach_df), names(bugs_df)), all = TRUE)

# Created four columns `creation_month`, `creation_year` and `lastdiffed_month`, `lastdiffed_year` to find in which month and year a bug is created and modified respectively.
baa <- baa %>%
    mutate(creation_month = format(creation_ts, "%m"), creation_year = format(creation_ts, "%Y"), lastdiffed_month = format(lastdiffed, "%m"), lastdiffed_year = format(lastdiffed, "%Y")) %>%
    group_by(creation_month, creation_year)
datatable(head(baa, 5), options = list(scrollX = TRUE))

About the bugs_activity and attachments Data Used for Analysis

I’ve taken the 15 columns under consideration to Analyse the Data. The brief description about the columns as follows:

1. bug_id: Unique numeric identifier for bug.
2. attach_id: Unique numeric identifier for attachment.
3. creation_ts: When bug was filed.
4. modification_time: The date and time on which the attachment was last modified.
5. description: Text describing the attachment.
6. mimetype: Content type of the attachment like text/plain or image/png.
7. ispatch: Whether attachment is a patch.
8. filename :Path-less file-name of attachment.
9. submitter_id: Unique numeric identifier for who submitted the bug.
10. isobsolete: Whether attachment is marked obsolete.
11. isprivate: TRUE if the attachment should be private and FALSE if the attachment should be public.
12. creation_month: The month in which the bug is created.
13. creation_year: The year in which the bug is created.
14. lastdiffed_month: The month in which the bug is last modified.
15. lastdiffed_year: The year in which the bug is last modified.

Visualizations

#Counting number of bugs per month in an year
bugs_counts <- baa %>%
    arrange(bug_id) %>%
    count(creation_year)
skim(head(bugs_counts))

Data summary

Name	head(bugs_counts)
Number of rows	6
Number of columns	3
_______________________
Column type frequency:
numeric	1
________________________
Group variables	creation_month, creation_year

Variable type: numeric

skim_variable	creation_month	creation_year	n_missing	complete_rate	mean	sd	p0	p25	p50	p75	p100	hist
n	01	1999	0	1	17	NA	17	17	17	17	17	▁▁▇▁▁
n	01	2000	0	1	13	NA	13	13	13	13	13	▁▁▇▁▁
n	01	2001	0	1	30	NA	30	30	30	30	30	▁▁▇▁▁
n	01	2002	0	1	41	NA	41	41	41	41	41	▁▁▇▁▁
n	01	2003	0	1	30	NA	30	30	30	30	30	▁▁▇▁▁
n	01	2004	0	1	21	NA	21	21	21	21	21	▁▁▇▁▁

# 3D plot to see the number of bug counts per month in a year
bug_count_graph <- plot_ly(
    x = bugs_counts$creation_month,
    y = bugs_counts$creation_year,
    z = bugs_counts$n,
    type="scatter3d", 
    mode="markers", marker = list(size=2)) 

bug_count_graph <- bug_count_graph %>%
    layout(
        title = "Bug Counts with year and month"
    )
bug_count_graph

## Warning: Ignoring 1 observations

The above visualization is about the number of bugs counts per month in a year. The Most number of bug count is 77 in the April, 2015.

#filtering the data where resolution is Duplicate
res_dupli <- baa %>%
    filter(resolution == "DUPLICATE" | bug_status == "closed")

# plotting graph with creation month where resolution is Duplicate
dupli_month_graph <- ggplot(res_dupli) +
    geom_bar(aes(x = creation_month)) +
    labs(
        title = "Months in which Duplicate Bugs are Filed",
        x = "Months",
        y = "Bug_Count"
    )
ggplotly(dupli_month_graph)

The above above Visualization is about the month in which is bugs are filed where resolution is Duplicate. From the graph we can see that the most wast filled in the month of August having a bug count of 12 and the least bugs are filled in the month of December having a bug count of 2. This graph is from year 2006 to 2021.

# plotting graph with creation year where resolution is Duplicate
duplicate_year <- ggplot(res_dupli) +
    geom_bar(aes(x = creation_year)) +
    labs(
        title = "Year in which Duplicate Bugs are Filed",
        x = "Year",
        y = "Bug_Count"
    )
ggplotly(duplicate_year)

The above above Visualization is about the year in which is bugs are filed where resolution is Duplicate. From the graph we can see that the most wast filled in the year 2012 having a bug count of 11 and the least bugs are filled in the year 2007, 2008 and 2019 having a bug count of 1. This graph is from year 2006 to 2021.

#filtering the data where resolution is Fixed
res_fixed <- baa %>%
    filter(resolution == "FIXED" | bug_status == "closed")

# plotting graph with last modified year where resolution is Fixed
fig9 <- ggplot(res_fixed) +
    geom_bar(aes(x = lastdiffed_year)) +
    labs(
        title = "Year in which FIXED Bugs are Last Modified",
        x = "Year",
        y = "Bug_Count"
    ) +
    coord_flip()
ggplotly(fig9)

The above above Visualization is about the year in which is bugs are last modified where resolution is Fixed and their status is closed. From the graph we can see that the most wast last modified in the year 2002 having a bug count of 328 and In year, 2021 47 bugs are fixed and closed.

# plotting graph with creation year where resolution is Fixed
fig10 <- ggplot(res_fixed) +
    geom_bar(aes(x = lastdiffed_month)) +
    labs(
        title = "Month in which FIXED Bugs are Last Modified",
        x = "Month ",
        y = "Bug_Count"
    )
ggplotly(fig10)

The above above Visualization is about the month in which is bugs are last modified where resolution is Fixed. From the graph we can see that the most wast last modified in the month December having a bug count of 559 and in the month of September having a bug count of 228 are least modified. This graph is from year 1998 to 2021.

res_invalid <- baa %>%
    filter(resolution == "INVALID" | bug_status == "CLOSED")

invalid_graph <- ggplot(res_invalid) +
    geom_bar(aes(x = creation_month)) +
    labs(
        title = "Month in which INVALID Bugs are Filed",
        x = "Month ",
        y = "Bug_Count"
    )
ggplotly(invalid_graph)

The above above Visualization is about the month in which is bugs are last modified where resolution is Invalid and status is closed. From the graph we can see that the most wast created in the month October having a bug count of 625 and in the month of Febuary having a bug count of 491 are created. This graph is from year 1998 to 2021.

invaild_year_graph <- ggplot(res_invalid) +
    geom_bar(aes(x = creation_year)) +
    labs(
        title = "Year in which INVALID Bugs are Filed",
        x = "Year",
        y = "Bug_Count"
    ) + coord_flip()
ggplotly(invaild_year_graph)

This Visualization refers to the Creation of the Invalid bugs. In year, 1998 the a total of 63 Invalid bugs are created which are least and in the year 2013 a total of 431 bugs are filed which are most.

priority_graph <- baa %>%
    ggplot(aes(x = creation_year, y = bug_id)) +
    geom_point() +
    facet_wrap( ~priority) +
    labs(title = "Bugs created year with their priorities",
         y = "Bug ID",
         x = "Date") + theme_bw(base_size = 9) +
    coord_flip()
ggplotly(priority_graph)

The above visualization gives the insight about the bugs when they are created and under which priority the fall like from the above plot we can conclude that the majority of the bugs are filed under the P5 which is having the least priority.

Data Exploartion of bugs_mod Table from the Database

bugs_mod_df <- tbl(con, "bugs_mod")
# Converting `bugs_mod_df to `dataframe`
bugs_mod_df <- as.data.frame(bugs_mod_df)
#for quick view of the datatypes and the structure of data
skim(bugs_mod_df)

Data summary

Name	bugs_mod_df
Number of rows	7042
Number of columns	28
_______________________
Column type frequency:
character	18
numeric	10
________________________
Group variables	None

Variable type: character

skim_variable	n_missing	complete_rate	min	max	empty	n_unique	whitespace
row_names	0	1.00	1	4	0	7042	0
bug_file_loc	7042	0.00	NA	NA	0	0	0
bug_severity	0	1.00	5	11	0	7	0
bug_status	0	1.00	3	11	0	8	0
creation_ts	14	1.00	10	10	0	4274	0
delta_ts	7042	0.00	NA	NA	0	0	0
short_desc	0	1.00	1	255	0	6923	0
op_sys	7042	0.00	NA	NA	0	0	0
priority	0	1.00	2	2	0	5	0
rep_platform	0	1.00	3	25	0	7	0
version	0	1.00	3	15	0	43	0
resolution	564	0.92	4	19	0	11	0
target_milestone	0	1.00	3	3	0	1	0
status_whiteboard	7042	0.00	NA	NA	0	0	0
lastdiffed	7042	0.00	NA	NA	0	0	0
estimated_time	0	1.00	4	6	0	19	0
remaining_time	0	1.00	4	4	0	1	0
deadline	7008	0.00	10	10	0	30	0

Variable type: numeric

skim_variable	n_missing	complete_rate	mean	sd	p0	p25	p50	p75	p100	hist
bug_id	0	1	10817.89	6189.36	1	5686.75	14101.5	16048.75	18097	▃▁▂▂▇
assigned_to	0	1	17.48	120.26	1	2.00	5.0	16.00	2787	▇▁▁▁▁
product_id	0	1	2.00	0.00	2	2.00	2.0	2.00	2	▁▁▇▁▁
reporter	0	1	685.69	1003.34	1	2.00	2.0	1056.00	3432	▇▂▁▁▁
component_id	0	1	9.84	5.20	2	6.00	9.0	15.00	19	▇▇▆▃▆
qa_contact	7042	0	NaN	NA	NA	NA	NA	NA	NA
votes	0	1	0.00	0.00	0	0.00	0.0	0.00	0	▁▁▇▁▁
everconfirmed	0	1	0.83	0.38	0	1.00	1.0	1.00	1	▂▁▁▁▇
reporter_accessible	0	1	1.00	0.00	1	1.00	1.0	1.00	1	▁▁▇▁▁
cclist_accessible	0	1	1.00	0.00	1	1.00	1.0	1.00	1	▁▁▇▁▁

#showing the baa i.e `bugs_mod_df` table in the `datatable`
datatable(head(bugs_mod_df, 5), options = list(scrollX = TRUE))

Data Exploartion of longdescs Table from the Database

longdescs_df <- tbl(con, "longdescs")

## Warning in .local(conn, statement, ...): Decimal MySQL column 4 imported as
## numeric

# Converting `longdescs_df` to `dataframe`
longdescs_df <- as.data.frame(longdescs_df)

## Warning in .local(conn, statement, ...): Decimal MySQL column 4 imported as
## numeric

#for quick view of the datatypes and the structure of data
skim(longdescs_df)

Data summary

Name	longdescs_df
Number of rows	26942
Number of columns	11
_______________________
Column type frequency:
character	3
numeric	8
________________________
Group variables	None

Variable type: character

skim_variable	n_missing	complete_rate	min	max	empty	n_unique	whitespace
bug_when	0	1.00	19	19	0	26270	0
thetext	0	1.00	0	422285	772	25588	0
extra_data	24966	0.07	1	5	0	1948	0

Variable type: numeric

skim_variable	n_missing	complete_rate	mean	sd	p0	p25	p50	p75	p100	hist
comment_id	0	1	83378.70	7986.99	1	76528.25	83263.5	90215.75	97284	▁▁▁▃▇
bug_id	0	1	10479.44	6260.77	1	4195.00	13361.0	16072.00	18097	▅▁▃▂▇
who	0	1	457.47	896.85	1	2.00	2.0	412.00	3432	▇▁▁▁▁
work_time	0	1	0.00	0.04	0	0.00	0.0	0.00	5	▇▁▁▁▁
isprivate	0	1	0.00	0.00	0	0.00	0.0	0.00	0	▁▁▇▁▁
already_wrapped	0	1	0.00	0.00	0	0.00	0.0	0.00	0	▁▁▇▁▁
type	0	1	0.35	1.26	0	0.00	0.0	0.00	6	▇▁▁▁▁
is_markdown	0	1	0.04	0.20	0	0.00	0.0	0.00	1	▇▁▁▁▁

#showing the baa i.e `longdescs_df` table in the `datatable`
datatable(head(longdescs_df, 5), options = list(scrollX = TRUE))

dbDisconnect(con )

## [1] TRUE